<div class="span7">
   <div class="widget-box transparent">
      <div class="widget-header widget-header-flat">
         <h4 class="lighter">
            <i class="icon-signal"></i>
            Xuất nhập
         </h4>
         <div class="widget-toolbar">
            <a href="#" data-action="collapse">
            <i class="icon-chevron-up"></i>
            </a>
         </div>
      </div>
      <div class="widget-body">
         <div class="widget-main padding-4">
            <div id="sales-charts"></div>
         </div>
         <!--/widget-main-->
      </div>
      <!--/widget-body-->
   </div>
   <!--/widget-box-->
</div>